Thursday, May 26, 2011

FZR600 Head

I got the cylinder head back from the machinist. Took 6 thou off and it looks great. On one of the cylinders it looks like something tagged the side of the chamber? There's a slight dent which I'm sure won't affect anything. Maybe whatever happened to this head in its past life caused it to be out of spec and my leaking issue. I got the new valve seals in as well. Proper Yamaha ones with a steel jacket and viton rubber. Lets get this done.

It was skimmed to get the head gasket to seal. I had about .007" removed. I don't know if that would make any discernible bump in compression. I don't know how much clearance is in there between the pistons and valves. You may be able to deck it more than that and get a bit of a boost. I wouldn't go crazy with the engine work. Its typically cheaper and more reliable to just buy a faster bike lol